Display device.



A. S. SPIEGEL.

DISPLAY DEVICE.

APPLICATION FILED JAN. zz, 1913.

. EUQTZ-TJl Zeiander Spegel,

UNITED S'TiAEES ALExANDEr-LSQ ennemi, or lon-roseo, Inni-Norse) ori-:1on1

DISPLAY g DEVICE.

Specification. Letters Patent.

To all "wlwm t mayv concern; i

Be it known that IAL EXANDE1,1 S..SIE,QEL,

Chicago, Illinois, have .inventedcertain new and useful Improvementsl in Display,De vices, of which the followingjs a specification.

My invention relates to display device such as composite picture slides, fpi'ture postcards of the type disclosed in Patent of the United States granted to` me December 28, 1909, #949,385, and January 11, 1910, #946,407, for advertising apparatus of the general typein which a screen member having `parallel llnes or divisions thereon coperate with a picture-carryingl or design-carrying member, the 'design orv picture of which is displa ed through the clear spaces between the lines or. bars of the screen. I

One object of my present invention is to render it possible to use a screen having its lines or bars much finer and fmuch closer together than has been possible heretofore, this fineness of the lines and fineness of the spaces between them being desirable because .the lines will not be so noticeable to the eye of the observer, and a further object of the invention is to enable me to operate the display device with good effect and with any desired speed.

The invention is shown in the accompanying drawings, in whichf Figure 1 is a front view of a composite picture slide embodying my invention; Fig. 4

2 is a sectional view. Fig. 3 is a view of the opposite side of Fig. 1.

In these drawings' l is the screen member which may be ot various forms, but in one form adapted as .a composite picture slide. This screen member is composed of transparent material having the lines of the screen etched or otherwise formed thereon.A In rear of this screen member is the design or picture-carrying member 2, and` this may have any suitable design or plctur'm'arked thereon such, for instance', as is shown in the above mentioned patents where the picture carrying member is formed of lines or groups of lines adapted to appear through the clear spaces between the lines of the screen.

Heretofore the screen member has been formed with its lines extending parallel 'of the screen.

a .direction-at ristltanslstg the.' lines .and

clear 'spaces of the screen.v With'my ,presentl 1mPQVQmPtthaQreeu1 member.. and the'. Picture-@armas mmberare mrelatedffhat teams-vement,pt'theapitrearryin mem-f.

r is 1n adirection inclined tothe ines of x fatented Fehr 24,4914.

the screens Inemlper.- 1 prefer to accomplish this Vrelatlve movementv a'nd arrangement'of 'themscreen-carrying member and picturecarrying member by making the lines on the screen member inclined instead of vertical, the inclination'being at an angle but a few degrees from horizontal. The picture-` carrying member, moving in a horizontal plane, will cause any point thereon to move along a line sharply inclined to the lines e As .a result of this, any given polnt on the picture-carrying member will have to Itraverse a greater distance in order to cross one ofthe clear-spaces or to` cross one of the lines .of the screen than would be the case were. its movement directly at rightangles to the lines and spaces of the screen member.' The greater the lines of the screenmember are slanted in relation to the lline of movement of the pictureor design-carrying mem-ber, the longer any particular 'point on the picture-carrying member will be `displayed' for a given rate of speed in the relative movement of the picture-carrying member and screen member.` 'As above stated, with the lines of the screen member arranged -slanting in relation to the line of relative movement, the

. screen lines maybe madefni'er and set closer together, and thus beY less-gsible to the eye than if the lines were at? right angles to the relative movement ofthe parts, for it will be observed that in order to get the same length of display between the lines or l guided in relation to the other in one direction` but held from relative movement in the other direction.

As shown in Fig. 3, the lines making up vthe picture member are preferably also ina picture-carrying member, said members having relative movement in a horizontal plane, substantially as described.

3. A display device consisting of a screen member and a design or picture-carrying member, said members being relatively movable, the screen member having its lines or bars inclined to the direction of relative movement of the members and a picturecarrying member havin its lines also inclined to the direction o relative movement of the members, substantially as described.

In testimony whereof, I aix my signature in presence of two witnesses.

' ALEXANDER S. SPIEGEL.

Witnesses:

W. JAMES, WM. J MCKENNA. 

